what is 1145 alloy aluminum foil?

1145 alloy aluminum foil and its sister alloy 1235 have a minimum aluminum content of 99.45%, and the chemical and physical properties are almost the same. Occasionally, some production batches can be double-certified for 1145 and 1235 alloys. Like 1100 aluminum alloys, both are considered commercially pure alloys with excellent formability.

Due to the high aluminum content, aluminum alloy 1145 conducts even better than 1100 alloy. On the other hand, 1145 alloy is less and less on the market as many people find 1235 alloy more readily available as it responds equally well in most applications.

1145 alloy aluminum foil

1145 aluminum has the advantages of high formability, good electrical conductivity, lightweight and corrosion resistance. Aluminum foil 1145 is commonly used in capacitors, food packaging, printing foils, beauty salons, electrical appliances, batteries and households, etc.

1145 aluminum general parameters

Alloy1145 aluminum foil
TemperO, H18, H19
Product Stylecoil, roll
Thickness0.01-0.2mm,0.0005 to 0.064 inches
Width100-1600mm,0.375 to 60 inches
Thickness tolerance+/- 2%
PerformanceOne is high plasticity and corrosion resistance, and the other is electrical and thermal conductivity, which can withstand various pressure processing and extension bending.
Typical productFood packaging foil, printing foil, hairdressing foil, electrical foil, battery foil, household foil, cable foil, etc.
Purchase Notesthe surface of the aluminum foil shall be clean and smooth, there shall be no corrosion, empty, folding, brown staining, slotted, add edge, wrinkling , concave and convex.
The surface of the high-quality aluminum foil are not allowed to have a serious color difference. The end surface of the aluminum foil should be clean and tidy, there is no burr, wrong layer, bruising and collapses.
PackageExport standard, wooden packing or according to customer’s requirement

The 1145 aluminum foil belongs to 1000 series, which is essentially pure with a aluminum content of 99%, which is widely applied in chemical industry and scientific experiment.

Aluminum alloy 1145 Chemical Composition

What is the composition of aluminum 1145?


1145 aluminum foil mechanical properties

Elongation (Annealed): % in 2 inches35
Elongation (1145 H12):12
Elongation (1145 H14):9
Elongation (1145 H16):6
Elongation (1145 H18):5
Tensile Strength (Annealed):  x 1000 psi13 x 1000 psi
Tensile Strength (1145-H12):16 x 1000 psi
Tensile Strength (1145-H14):18 x 1000 psi
Tensile Strength (1145-H16):21 x 1000 psi
Tensile Strength (1145-H18):24 x 1000 psi
Yield Strength (Annealed): 0.2% offset5 x 1000 psi
Yield Strength (H12):15 x 1000 psi
Yield Strength (H14):17 x 1000 psi
Yield Strength (H16):20 x 1000 psi
Yield Strength (H18):22 x 1000 psi

The advantages of aluminum foil 1145 are:

  • To ensure the quality of slices, the end faces are aligned, and there is no burr, tower shape, etc.
  • Make sure the tape at the joint is not stuck;
  • Strictly control the width and thickness of the finished product to ensure that the upper and lower thicknesses are within 4%;
  • The layout is flat, without edges, oil spots, black oil spots, bright lines, rolling printing, bumps, etc.

Difference between 1100 aluminum foil and 1145 aluminum foil

Both 1100 and 1145 are aluminum alloys commonly used in a variety of applications, including foil production. While they share some similarities, there are also differences that make them suitable for specific purposes. Below is a comparison of 1100 and 1145 aluminum foil:

Aluminum foil alloy composition:

1100 Aluminum Foil: This alloy is known for its high purity, with an aluminum content of approximately 99.0%. It’s almost entirely aluminum, so it’s soft and easy to work with. Has excellent corrosion resistance and thermal conductivity.
1145 Aluminum Foil: This alloy is also high in aluminum, usually around 99.45%. Like 1100, it has high purity, good formability and corrosion resistance.

Aluminum foil application:

1100 Aluminum Foil: Because of its softness and high purity, 1100 aluminum foil is often used in applications where ductility and corrosion resistance are important, such as packaging, kitchen foil, and capacitor manufacturing.
1145 Aluminum Foil: This alloy is often used in applications requiring high electrical conductivity. It is commonly used in transformer windings, capacitors, and other electrical applications.

Aluminum foil conductivity:
1100 Aluminum Foil: While aluminum alloys have good electrical conductivity, they are less conductive than alloys specifically designed for electrical applications.
1145 Aluminum Foil: This alloy is known for its excellent electrical conductivity due to its high aluminum content and purity. It is used when high conductivity is the main requirement.
Aluminum foil strength and mechanical properties:

Both 1100 and 1145 aluminum foils are relatively soft and have low strength compared to other aluminum alloys. They are generally not used in applications requiring high mechanical strength.
Cost and Availability:

The main difference between 1100 and 1145 aluminum foil is their specific application. 1100 is better suited for general purpose applications where ductility and corrosion resistance are important, such as packaging and kitchen foils. 1145, on the other hand, was chosen for its high conductivity and is often used in electrical applications such as transformers and capacitors.

Why choose us?

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Aluminum foil production line


  • Package: Wooden case
  • Standard Wooden case specification: Length*Width*Hight=1.4m*1.3m*0.8m
  • Once needed,wooden case dimension could be redesigned as required.
  • Per wooden case Gross Weight scale: 500-700KG Net Weight: 450-650KG
  • Remark: For special packaging requirements, corresponding shall be added accordingly.